We are looking at IADs in our code I think. And someone else at work also
wrote some descriptor parsing code in Python... I'll have a look and let
you know...
On Oct 25, 2012 1:10 AM, "Markus" <li...@neuronenwerk.de> wrote:
> Hi list,
>
> I'm having a device here, that amongst others, features some
> descriptors within the configuration descriptor, that are not
> explicitely available via the libusbx API. These are:
>
> - Interface Association Descriptor
> - Device Class Specific Descriptors
> - Super Speed Companion Descriptor
>
> While I can, for instance, read the IAD via the "extra" field, I
> can't do arbitrary reads - as it looks. If I consider the memory
> contiguous, it will fail. So I'm unable to parse anything that's
> not been wrapped by libusbx, like my Device Class Specific
> Descriptors.
>
> Though the IAD is living directly after the 8 byte configuration
> descriptor head in the config descriptor (within the device),
> the address of "extra" is nearly 7k away from its end.
>
> If the configuration descriptor would be contiguous, it would
> easily be possible to parse the descriptor.
>
> Am I missing something? If not, would you be willing to change
> this, as it would enable a lot more applications with libusbX.
>
> Thanks in advance,
> /Markus
>
>
>
>
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